52585281 has 30 divisors (see below), whose sum is σ = 91385250. Its totient is φ = 30046464.

The previous prime is 52585279. The next prime is 52585283. The reversal of 52585281 is 18258525.

52585281 is a `hidden beast` number, since 52 + 585 + 28 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (52585279) and next prime (52585283).

It can be written as a sum of positive squares in only one way, i.e., 39690000 + 12895281 = 6300^2 + 3591^2 .

It is not a de Polignac number, because 52585281 - 2¹ = 52585279 is a prime.

It is a super-2 number, since 2×52585281² = 5530423555697922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52585283) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2656 + ... + 10593.

It is an arithmetic number, because the mean of its divisors is an integer number (3046175).

Almost surely, 2^52585281 is an apocalyptic number.

It is an amenable number.

52585281 is a deficient number, since it is larger than the sum of its proper divisors (38799969).

52585281 is a wasteful number, since it uses less digits than its factorization.

52585281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13275 (or 13259 counting only the distinct ones).

The product of its digits is 32000, while the sum is 36.

The square root of 52585281 is about 7251.5709332530. The cubic root of 52585281 is about 374.6462584166.

The spelling of 52585281 in words is "fifty-two million, five hundred eighty-five thousand, two hundred eighty-one".